Answer:
11 inch big zip for $7.75
Step-by-step explanation:
Find the unit price of the 8 inch little zip for $6.25
$6.25/8 = $0.78 per inch of zipper
Find the unit price of the 11 inch big zip for $7.75
$7.75/11 = $0.70 per inch of zipper
The better deal is the 11 inch big zip because it has the lower cost per inch.
